# How Does A Ground Fault Circuit Interrupter Function Work Brainly

By | September 5, 2022

Ground Fault Circuit Interrupters (GFCIs) are an essential part of modern electrical safety and are required in virtually all new residential and commercial installations. Understanding how a GFCI works can help you use them safely, saving you from potentially lethal shocks.

A GFCI is designed to protect people from electrical shock by quickly shutting off the circuit when there is a difference in electricity flowing to and from the device. This difference, usually caused by an overload or short circuit, is known as a ground fault. If a person were to touch a bare wire while an appliance was plugged into the outlet, a large amount of current would flow through the personâ€™s body. The GFCI senses this flow of electricity and immediately cuts it off, protecting the person from any potential harm.

The principle behind how a GFCI works is relatively simple. It consists of a pair of circuit breakers connected in series with two sets of contacts. The first set of contacts measure the amount of current going out from the GFCI, while the second set measures the current coming back. If the current out is not equal to the current back, the GFCI trips, cutting off the current before it can cause harm.

While the basic principle of GFCIs is easy to understand, the technology behind them is considerably more complex. A GFCI must be able to detect a ground fault extremely quickly, within fractions of a second. To accomplish this, the GFCI contains a sensing coil that measures very small differences in the current flowing through the circuit. When a difference is detected, a release mechanism is triggered, cutting off the power before it can cause any injury.

GFCIs are a vital part of our electrical safety systems, and understanding how they work can help us use them correctly and avoid dangerous situations. Knowing how a GFCI detects ground faults and why it trips quickly can help us make better decisions about where to place them and how to manage our electrical systems.

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